The Long and the Short of It: lsof

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• Isof

  Track down and expose intruders with the versatile admin tool lsof.

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• lsof

  In Linux, everything is a file – directories, devices, pipes – so lsof (list open files) reveals what's happening on your system.

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• The sys admin’s daily grind: Sysdig

  In this issue, sys admin columnist and tool veterinarian Charly Kühnast invites Sysdig, the jack-of-all-trades among system diagnostic tools, into his surgery for a quick checkup. The project promises to unite the functionality of lsof, iftop, netstat, tcpdump, and others.

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• Charly's Column: QPS

  The graphical tool QPS frees admins from Kafkaesque ambiguities about the cause, history, and side effects of running processes. Depending on the view, either clarity or detailed information dominate the scene.

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• Charly's Column

  Well-used services write reams of log information to disk, which is not only bothersome from a storage perspective but also pushes grep and the usual group of statistics tools to their limits. Will hitching the syslog daemon up to a database help?

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